Flame-spreader.



W. SWALLOW.

FLAME SPREADER.

APPLICATION FILED we. 14, 1913.

1 538,647,, Patented June 2, 1914.

UNITED STATES PATENT OFFICE.

WILLIAM SWALLOW, OF ROYTON', ENGLAND.

FLAME-SPREADER.

To all whom it may concern:

Be it known that 1, WILLIAM SwALLow, subject of the King of GreatBritain and Ireland, and resident of Royton, Oldham, in the county ofLancaster, England, have invented certain new and useful Improvements inFlame-Spreaders, of which the fol lowing is a specification.

My invention relates to improvements in or in connection withburning-oil? lamps used by painters, though the improvements are equallyapplicable to similar lamps employed by plumbers and others, the objectbeing to provide an improved form of burner nozzle for attaching to thelamp burner tube of that type whereby the flame may be spread or beconcentrated in accordance with the character of the work being operatedupon.

This invention consists in the novel con struction and combination ofthe parts hereinafter fully described and claimed.

In the drawings, Figure 1 is a side view of a spreading nozzle used incarrying out this invention. Fig. 2 is an end view, and Fig. 3 is a planview of the same. Fig. t is a longitudinal section through the nozzleprovided with a regulating plate according to this invention, Fig. 5 isa side View, and Fig. 6 is a plan view, of the regulating plate. Figs. 7and 8 are plan views showing modifications of the regulating plate.

In accordance with my invention I provide a nozzle having a tubularportion a of tapered formation at o internally to fit the burner tube ofa burning-oft lamp or the like, the tapered formation allowing of thenozzle fitting diflerent diameters of burner tubes. The outer end of thenozzle is i'an-sl'iaped, as shown in Fig. 1 and is adapted to leave acorrespondingly shaped chamber 0 within it opening into a slot (Z orelongated hole so that the Bunsen flame issuing from the nozzle is of aflat type and somewhat fish-tailed when looked at in the direction ofFig. 1. In this way a flame which is greatly spread can be formed andthus cover a greater surface of the structure being operated upon by theflame. The nozzle can be used with the slot (Z arranged horizontally orvertically or at any angle desired by merely turning the nozzle aroundon the burner tube.

Specification of Letters Patent.

Application filed August 14, 1913.

Patented June 2, 1914. Serial No. 784,761.

The slot cZ shown in Figs. 1 to 4 is of substantially standard size butin order to enable a thinner flame to be produced or one which is notspread so much or again one which may be of cylindrical formation Iemploy detachable plates such as those shown in Figs. 5 to 8. Myinvention is carried out satisfactorily by forming the end of the nozzlewith undercut flanges e and by making the plate f withcorrespondinglyshaped flanges g. The plate is of curved formation inside elevation as shown in Fig. 5 and can be slid on to the end of thenozzle from one end into the required position. The plate fits tight andis prevented being pushed too far by bending it over at it at one end.

Fig. 6 shows a plate with a narrower slot than that in Figs. 1 to 4;Fig. 7 a slot of the same width but less in length and Fig. 8 a circularhole. Various sizes of slots and holes may be employed in accordancewith the work being operated upon and whether more or less spreading ormore or less concentration is required.

that I claim as my invention and desire to secure by Letters Patentis 1. In a flame spreader, the combination, with a nozzle, of adetachable plate secured crosswise of the nozzle outlet and in contactwith its edges, said plate being provided with an outlet opening whichis of less area than the outlet opening of the nozzle and beingotherwise imperforate, whereby the size and shape of the flame ismodified.

2. In a flame spreader the combination, with a nozzle having flanges atthe edges of its outlet opening, of a slidable plate provided withflanges which engage with the flanges on the nozzle and which hold thesaid plate in contact with the edges of the said outlet, said platebeing provided with an outlet opening of less area than the outletopening of the nozzle and being otherwise imperforate, whereby the sizeand shape of the flame is modified.

In testimony whereof I have hereunto set my hand in the presence of twowitnesses.

WILLIAM SW'ALLOWV. lVitnesses WILLIAM W. TAYLOR, AMY EVELINE Evlns.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

